function childContainer() {
	 var Rect = new createjs.Shape();
	 Rect.graphics.beginFill("#ff0000");
	 Rect.graphics.drawRect(5,5,50,50);
	 Rect.graphics.endFill();
	 var txt = new createjs.Text("hello world","20px Arial","#000");
	 this.addChild(Rect);
	 this.addChild(txt)
}
childContainer.prototype = new createjs.Container();